Call ID - 2c8486de-407f-4e67-83ab-7d92a85999ac timestamp - 07/08/2025 06:38:15:195 In logs, I can see User speech started, but transcription logs are missing, we are using deepgram. It was working fine till yesterday. Audio has human spoken content. Deepgram API is working as expected. One difference in deepgram is there are logs of streaming APIs since today in deepgram. I can only see SYNC logs https://cdn.discordapp.com/attachments/1402940331284103273/1402940331670114376/Screenshot_2025-08-07_at_2.32.04_PM.png?ex=6895bd80&is=68946c00&hm=4b4b2bb81df12e2d95cdc59681821ac130382cc846f6312b30337d2e4951b12f& https://cdn.discordapp.com/attachments/1402940331284103273/1402940332139610122/Screenshot_2025-08-07_at_2.33.13_PM.png?ex=6895bd80&is=68946c00&hm=bd47833323ae94d687ca9746df89c8ebe0089bc310bd126feddcfad24b1a80a8&

Suggestion: Check if your custom transcriber server is still establishing a WebSocket streaming connection to Deepgram, as required for real-time transcription. In your

transcriptionService.js

, ensure the following event handler is present and logging when the connection opens:

js
this.deepgramLive.addListener(LiveTranscriptionEvents.Open, () => {
  this.logger.logDetailed("INFO", "Deepgram connection opened", "TranscriptionService");
});

If this log is missing, the streaming connection may not be initializing—restart your server and verify the connection is established as expected. [See implementation details](https://docs.vapi.ai/customization/custom-transcriber#add-code-files) Source: - [Custom transcriber documentation](https://docs.vapi.ai/customization/custom-transcriber)

Same error here!!

Hi Geremayaa, could you please provide a call id where this issue occurs?

Yes, of course. This call ID is a good example: 60262598-e4b7-4db7-8ca7-d64efdf92dbd

Please check the roadmap to see when deepgram nova 3 ES language. If it is not on there already, feel free to request it.